Multi-channel reactions of composite nuclei
29 June-10 July
Towards high precision in multi-channel reactions of composite nuclei
Organizers: J. Kirscher (New Uzbekistan Univ., contact), M. Schäfer (Czech Academy of Sciences), E. Hiyama (RIKEN Nishina Center)
Talks and seminars during the first week (29/06 – 03/07); working group: 6-10 July
Low-energy reactions of composite nuclei are relevant for both technical and basic-science applications, and it remains a fundamental problem to reduce the uncertainties in their theoretical description. These uncertainties originate in a complicated interplay between strong and electromagnetic interactions at the low energies of interest where neither of the two can be neglected.
This project is held at a period at which the organizers deem the advancement in numerical techniques and algorithms, and the understanding of refining the nuclear interaction systematically sufficient to explore with reliable error estimates many ideas and hypotheses on how to affect reaction cross sections. To be specific in their goal, the organizers of the working group aim for theoretical predictions of reaction cross sections of composite nuclei with nucleons as degrees of freedom. Projectiles, targets, and reaction products are thus few-nucleon systems, and their formation in asymptotic states, their distortion and rearrangement in the collision process shall all be described with the same nuclear theory.
Goals of the project
1. Experimentalists and theoreticians shall identify key reactions
[i] to benchmark the accuracy of the numerical methods employed, i.e., a list of reactions measured with high precision,
[ii] to test the usefulness of interaction theory and numerical methods, i.e., reactions whose measurements are imprecisely known experimentally, and
[iii] to propose future experiments where the framework to be developed can demonstrate its predictive power and trustworthiness for applications in astrophysics, fusion research, and other fields where experiments are either unfeasible or too costly.
2. Development of a roadmap to integrate the latest advances in the understanding of systematically improvable interaction theories for systems close to unitarity, with the most sophisticated numerical techniques to solve the quantum few-body problem.
3. Transfer of knowledge and experience in overcoming the problems associated with composite multi-channel reactions when both short- and long-range Coulomb forces are relevant and act perturbatively and nonperturbatively.
4. Assess the potential of hypotheses about how to increase the yield of nuclear fusion reactions with state-of-the-art interaction theories and numerical methods.
5. Tailor the latest advances in the design of effective field theories in the form of so-called improved actions to the problem of composite multi-channel reactions.
Preliminary program, tentative list of talks
Introductory talks
M. Schäfer (Czech Academy of Sciences), TBD
E. Hiyama (RIKEN Nishina Center), TBD
J. Kirscher (New Uzbekistan Univ.) TBD
Potential speakers
Tomohiro Yoshioka (RIKEN)
Tian Jiaqi (Univ. of Tohoku) ; Avik Sarkar (Univ. of Tohoku)
Matus Rojik (Johannes Gutenberg University) Scattering and reactions in halo-EFT with α degrees of freedom
Harald W. Grieβhammer (Institute for Nuclear Studies, The George Washington Univ.) The formal structure of nuclear effective field theories up to N3LO and how to transform it into a practical representation
Rimantas Lazauskas (IPHC Strasbourg) The role of Faddeev (-Yakubovsky) expansions in higher-order calculations of (nuclear) reactions
Arnoldas Deltuva (Institute of Theoretical Physics and Astronomy, Vilnius)
Nir Barnea (Hebrew University of Jerusalem, HUJI) On strategies to quantify the catalysis of nuclear reactions with weak probes (muons, strong E&M fields, &c.)
Betzalel Bazak (Hebrew University of Jerusalem) Non-relativistic scattering observables from bound-state-like wave functions (Busch et al.’s method)
Wataru Horiuchi (Osaka Metropolitan University) An overview of methods to treat direct reactions with single-atom/nucleon degrees of freedom with Gaussian basis functions
Guillaume Hupin (IJCLab Orsay) The latest advances of applications of no-core shell model with continuum in an ab initio studies of nuclear reactions
Dean Lee (Michigan State University) Lattice effective field theory for low-energy nuclear reactions
Takashi Nakamura (Tokyo Science University) Reaction experiments with neutron-rich nuclei
Shoya Ogawa (Kyushu University) The adaptation of the 3-fragment CDCC to the description of reactions with light nuclei with stress on knockout reactions and relation to current experiments.
Alisher Sanetullayev (New Uzbekistan University) Scattering experiments with rare-isotope beams aschallenges for contact and halo interaction theories and methods (e.g. 11Li (p, d) 10Li transfer).
Yasutaka Taniguchi (Fukuyama University) Antisymmetrized molecular dynamics and its potential adaptation to low-energy reactions of composites
Alejandro Kievsky (INFN Pisa) Four-body nuclear reactions and beyond with the hyperspherical harmonics method and realistic nuclear interactions models
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Création-contact Web ESNT : Valérie Lapoux
